If you don't update to the latest version, some bugs might not be fixed, leading to not just the OKI Printer Offline error but also other problems. If you see a new update, be sure to do so right away. To check if there are any new updates available, open Settings and then select Update and Security. If the Check for Updates option is present, look for it and install it. Be patient and give it some time for the changes to take effect before attempting to print.